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The Economic Contribution From Iron Ore Mining Industry

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Does the economic contribution from the iron ore mining industry compensate for the extensive damage it causes to the environment?

Iron ores, like many other materials, must be mined from the earth before they can be processed and converted into usable products such as steel. In 2009, as the world’s leading exporter of iron, Australia traded 362 tonnes of iron ore, of varying compositions, at a value of $30 billion. (Geoscience Australia, n.d.) In Australia, iron ore mining is conducted in what are known as ‘open-cut’ mines, meaning that the mines are pits along the surface of the earth that become progressively deeper and larger as the metal ore is extracted. (Basics of Open Pit Mining, 2012) However, the mining, extraction and subsequent processing of iron ores pose certain risks to the environment. These risks include, but are not limited to: deforestation, acid mine drainage, leaching and air pollution. (Australian Bureau of Statistics, 2006) This begs the question: Does the economic contribution from the iron ore mining industry compensate for the extensive damage it causes to the environment?

When iron ore is extracted from the mines, it is typically in the form of haematite (Fe2O3), goethite (Fe2O3.H2O) and is composed of up to 50% Fe. These compounds then undergo beneficiation which consists of: concentration, sintering, reduction and refining to improve the purity of Fe present. The main chemical processes involved are sintering, which produces carbon dioxide,

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